【作者】 王秉哲； 刘振； 黄逸凡； 闫克平；

【Author】 WANG Bingzhe;LIU Zhen;HUANG Yifan;YAN Keping;Key Laboratory of Biomass Chemical Engineering of Ministry of Education,Zhejiang University;College of Environmental and Resource Sciences,Zhejiang University;Department of Chemical and Biological Engineering,Zhejiang University;

【机构】 浙江大学生物质化工教育部重点实验室； 浙江大学环境与资源学院； 浙江大学化学工程与生物工程学系；

【摘要】 低气压中的气体放电现象不同于常压下,可以在较低的气体温度和较小的电流下产生大面积的均匀等离子体,在材料处理、催化剂的活化和再生等领域有着很好的应用前景。本文在自制的真空反应器中采用平行板电极,在10-100 Pa的气压下,利用脉冲宽度小于50μs、峰值电压小于3 k V、频率50-104 Hz的双极性脉冲源,发生了最大体积约为20L的均匀等离子体。对放电时反应器的电压电流波形进行测试,获得在不同压强的空气、氧气、氩气介质,不同的电极间距下,放电的起始电压,以及空气中等离子体功率随气体压强、电极间距、极板面积、脉冲频率及电压峰值等不同参数变化的数量关系。更多还原

【Abstract】 Discharge phenomenon under low pressure is so different from that under atmospheric pressure, that uniform plasma of a rather large volume could be generated with a low media temperature and a low electric current. This kind of plasma has promising application prospects in areas like material processing, activation and regeneration of catalysts, and so on. In this paper, uniform plasma of a maximum volume of about 30 L is generated, using a bipolar pulsed power source(50-104 Hz, peak voltage less than 3 k V, pulse width less than 50 μs) and parallel plate electrodes, under pressure of 10-100 Pa, in a homemade vacuum reactor. Measurement of the time-varied voltage and current of the reactor during discharge has been undertaken, and we obtained the voltage starting a uniform discharge,also the relationship between power and parameters like pressure, electrode distance, electrode area, pulse frequency, etc., under several kinds of medium like air, oxygen, and argon.更多还原